JAVA Exceptions Which keyword is used to explicitly throw an exception? throw catch try throwing throw catch try throwing ANSWER DOWNLOAD EXAMIANS APP
JAVA Exceptions The class at the top of exception class hierarchy is ................. Throwable Object ArithmeticException Exception Throwable Object ArithmeticException Exception ANSWER DOWNLOAD EXAMIANS APP
JAVA Exceptions What will be the output of the following piece of code:class Person{ public void talk() {}}public class Test{ public static void main(String args[]){ Person p = null; try{ p.talk(); } catch(NullPointerException e){ System.out.print("There is a NullPointerException. "); } catch(Exception e){ System.out.print("There is an Exception. "); } System.out.print("Everything went fine. "); }} There is a NullPointerException. There is an Exception. There is a NullPointerException. There is a NullPointerException. Everything went fine. This code will not compile, because in Java there are no pointers. There is a NullPointerException. There is an Exception. There is a NullPointerException. There is a NullPointerException. Everything went fine. This code will not compile, because in Java there are no pointers. ANSWER DOWNLOAD EXAMIANS APP
JAVA Exceptions Given the following piece of code:class SalaryCalculationException extends Exception{}class Person{ public void calculateSalary() throws SalaryCalculationException{ //... throw new SalaryCalculationException(); //... }}class Company{ public void paySalaries(){ new Person().calculateSalary(); }}Which of the following statements is correct?1. This code will compile without any problems.2. This code will compile if in method paySalaries() we return a boolean in stead of void.3. This code will compile if we add a try-catch block in paySalaries().4. This code will compile if we add throws SalaryCalculationException in the signature of method paySalaries(). 3 and 4 1 and 4 2 and 3 2 and 4 1 and 2 3 and 4 1 and 4 2 and 3 2 and 4 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
JAVA Exceptions public class Test{ public static void main(String args[]){ try{ int a = Integer.parseInt("four"); } }}Which exception could be handled by the catch block for above? IllegalStateException ArrayIndexOutOfBoundsException ClassCastException None of these NumberFormatException IllegalStateException ArrayIndexOutOfBoundsException ClassCastException None of these NumberFormatException ANSWER DOWNLOAD EXAMIANS APP
JAVA Exceptions What will be the result after the class Test execution?class A{ public void doA(){ B b = new B(); b.dobB(); System.out.print("doA"); }}class B{ public void dobB(){ C c = new C(); c.doC(); System.out.print("doB"); }}class C{ public void doC(){ if(true) throw new NullPointerException(); System.out.print("doC"); }}public class Test{ public static void main(String args[]){ try{ A a = new A(); a.doA(); }catch(Exception ex){ System.out.print("error"); } }} "error" is printed "doBdoAerror" is printed nothing is printed "doCdoBdoA" is printed "doAdoBdoC" is printed "error" is printed "doBdoAerror" is printed nothing is printed "doCdoBdoA" is printed "doAdoBdoC" is printed ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS